What byproduct gas is released by plants and trees during the process of photosynthesis?
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Answer: C. Oxygen
Explanation
During photosynthesis, plants utilize sunlight to convert carbon dioxide and water into glucose, releasing oxygen as a primary byproduct. Chlorophyll pigments absorb solar energy to drive the chemical splitting of water molecules inside chloroplast structures. Molecular oxygen is generated as a waste product during this light-dependent reaction and expelled through leaf stomata. Photosynthesis is the fundamental biological process used by plants, algae, and certain bacteria to synthesize organic food. Stomata are microscopic pores on plant leaves that facilitate gas exchange between the internal tissues and the atmosphere. Earth's atmospheric oxygen concentration was originally established and maintained by ancient photosynthetic organisms over millennia.
Option A is incorrect because hydrogen is retained within organic glucose molecules and water rather than released as gas. Option B is incorrect because nitrogen gas is abundant in the atmosphere but is not produced by plant photosynthesis. Option D is incorrect because carbon dioxide is consumed as a reactant during photosynthesis rather than released as a byproduct.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
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